Variation of small strain stiffness for peat and organic soil

Tadahiro Kishida, Ross W. Boulanger, Timothy M. Wehling, Michael W. Driller

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

Seismic hazards in the Sacramento-San Joaquin Delta depend on the site response of soil deposits that often include thick peat and organic soil layers. The small strain stiffness (G max) of peat and organic soils was studied based on a combination of laboratory and in situ test data. A series of one-dimensional consolidation tests were carried out with bender elements to measure the shear wave velocity (Vs) and determine G max (= ρV s 2) in the laboratory. The variation of the G max with consolidation stress history and organic content (OC) was obtained using reconstituted and undisturbed samples. G max measured on reconstituted samples agreed well with Gmax measured on undisturbed samples with similar characteristics. Regression equations for estimation of G max or V s in terms of stress history and organic content were developed and compared to in situ shear wave velocity data.

Original languageBritish English
Title of host publication8th US National Conference on Earthquake Engineering 2006
Pages4569-4578
Number of pages10
StatePublished - 2006
Event8th US National Conference on Earthquake Engineering 2006 - San Francisco, CA, United States
Duration: 18 Apr 200622 Apr 2006

Publication series

Name8th US National Conference on Earthquake Engineering 2006
Volume8

Conference

Conference8th US National Conference on Earthquake Engineering 2006
Country/TerritoryUnited States
CitySan Francisco, CA
Period18/04/0622/04/06

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